Properties of the Number 8239

Eight Thousand Two Hundred Thirty-Nine

Basics

Value: 8238 → 8239 → 8240

Parity: odd

Prime: No

Previous Prime: 8237

Next Prime: 8243

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 11 × 107

Divisors: 1, 7, 11, 77, 107, 749, 1177, 8239

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000101111

Octal: 20057

Duodecimal: 4927

Hexadecimal: 202f

Square: 67881121

Square Root: 90.76893741803966

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = s(1)*s(n) + s(2)*s(n-1) + ... + s(k)*s(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3). A24312

T(n,k)=Number of 0..k arrays x(0..n+1) of n+2 elements without any two consecutive increases or two consecutive decreases. A200838

a(n) = number of regions in the configuration A290447(n). A290865

Numbers which need eight 'Reverse and Add' steps to reach a palindrome. A65213

Products of 3 distinct safe primes. A157354

Start of a triple of consecutive squarefree numbers each of which has exactly 3 distinct prime factors. A242606

Expansion of e.g.f. log(1 + arctan(x))*exp(-x). A297211

G.f. A(x) satisfies: A(x) = x * ∏_k>=1 (1 + k·A(x^k)). A308372

First term of n-th difference sequence of (floor(k·r)), r = sqrt(3), k >= 0. A325666

a(n+1) = [ A·a(n)+B ]/p^r, where p^r is the highest power of p diving [ A·a(n)+B ] and p=2, A=2.00013, B=3.0. A29580